Question

If the area of a rectangular field is (21xsquare - 7x) and one of its side is 7x what is its other side?

Answer 1

$other \: \: side = \frac{21 {x}^{2} - 7x }{7x} \\ = \frac{7x(3x - 1)}{7x} = 3x - 1$

Answer 2

ANSWER
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RECTANGLE
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A polygon with four sides whose -

Opposite sides are equal.

The sides meet at right angle . Therefore , all angles of a rectangle are 90°.

A.T.Q.
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Area of a rectangular field = 21x² - 7x m²

One side ( length ) = 7x

Therefore , breadth =

We know----

Area of rectangle = Length × Breadth

21x² - 7x = 7x × b
$= > \: breadth \: = \: \frac{21 {x}^{2} - 7x }{7x} \\ \\ = > \: \frac{7x(3x - 1)}{7x(1)} \\ \\ = > breadth \: = 3x - 1 \: \: ans$
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